在Tkinter計算器中顯示減號和加號

Question

現在我正在用python和tkinter制作計算器，但是我有一個小問題。 減號和加號以一種非常奇怪的方式移動，我認為它看起來並不酷。 查看應在其中進行計算的條目

因此，我只想知道如何才能使它們居中（移動減去更高一點）。

我的代碼：

from tkinter import *

root = Tk()
root.title("Calculator")
root.resizable(width=False, height=False)

# Main variables
equation = StringVar()
equation.set("0")

equa=""

# Program functions
def ButtonPress(num):
   global equa
   equa = equa + str(num)
   equation.set(equa)

# Widgets
calculation = Entry(root, textvariable=equation, font=("Arial", 15,"bold"), 
bd=12, insertwidth=4, width=15)
calculation.grid(columnspan=4)
# Numbers
button1 = Button(root, text='1', command=lambda: ButtonPress(1), bg="gainsboro",bd=3,  padx=12, pady=5, font=("Arial", 13, "bold"))
button1.grid(row=1, column=0, sticky=W)
button2 = Button(root, text='2', command=lambda:ButtonPress(2),bg="gainsboro",bd=3,  padx=12, pady=5, font=("Arial", 13, "bold"))
button2.grid(row=1, column=1, sticky=W)
button3 = Button(root, text='3', command=lambda: ButtonPress(3),bg="gainsboro",bd=3,  padx=12, pady=5, font=("Arial", 13, "bold"))
button3.grid(row=1, column=2, sticky=W)
button4 = Button(root, text='4', command=lambda: ButtonPress(4),bg="gainsboro",bd=3,  padx=12, pady=5, font=("Arial", 13, "bold"))
button4.grid(row=2, column=0, sticky=W)
button5 = Button(root, text='5', command=lambda: ButtonPress(5),bg="gainsboro",bd=3,  padx=12, pady=5, font=("Arial", 13, "bold"))
button5.grid(row=2, column=1, sticky=W)
button6 = Button(root, text='6', command=lambda: ButtonPress(6),bg="gainsboro",bd=3,  padx=12, pady=5, font=("Arial", 13, "bold"))
button6.grid(row=2, column=2, sticky=W)
button7 = Button(root, text='7', command=lambda: ButtonPress(7),bg="gainsboro",bd=3,  padx=12, pady=5, font=("Arial", 13, "bold"))
button7.grid(row=3, column=0, sticky=W)
button8 = Button(root, text='8', command=lambda: ButtonPress(8),bg="gainsboro",bd=3,  padx=12, pady=5, font=("Arial", 13, "bold"))
button8.grid(row=3, column=1, sticky=W)
button9 = Button(root, text='9', command=lambda: ButtonPress(9),bg="gainsboro",bd=3,  padx=12, pady=5, font=("Arial", 13, "bold"))
button9.grid(row=3, column=2, sticky=W)
button0 = Button(root, text='0', command=lambda: ButtonPress(0),bg="gainsboro",bd=3,  padx=12, pady=5, font=("Arial", 13, "bold"))
button0.grid(row=4, column=1, sticky=W)
button_plus = Button(root, text='+', command=lambda: ButtonPress('+'),bg="gainsboro",bd=3,  padx=12, pady=5, font=("Arial", 13, "bold"))
button_plus.grid(row=1, column=3, sticky=W)
button_minus = Button(root, text='-', command=lambda: ButtonPress('-'),bg="gainsboro",bd=3,  padx=14, pady=5, font=("Arial", 13, "bold"))
button_minus.grid(row=2, column=3, sticky=W)



root.mainloop()

Answer 1

最簡單的解決方案是選擇等寬字體，例如，您可以嘗試：

calculation = Entry(root, textvariable=equation, font=("Courier", 15,"bold"), 
bd=12, insertwidth=4, width=15)
calculation.grid(columnspan=4)